big-money experts say they could get $600 million for box right now, but it's not for sale. >> yeah. >> reporter: tom brokaw, nbc news, silicon valley. >>> one other economic note tonight. it's a done deal. the united states government no longer owns a piece of the chrysler corporation, but the majority stakeholder is now the italian automaker fiat. american taxpayers, along with fiat, helped bail chrysler out a few years back. fiat has gradually been raising its stake, and today it bought the last of the u.s. shares along with a small stake held by canada, so tonight fiat owns 53% of this once proud and formerly all-american brand, and at the end of the day the u.s. treasury estimates american taxpayers lost $1.3 billion on this deal. >>> up next here tonight, is it possible while one era ends another one is about to begin? more material today, some audio >>> the nixon library released more material today, some audio of the president, but mostly a trove of memos, many written by folks who are still around and still in the public eye, and they show people during a markedly different